Concept:Environmental education focuses on understanding the interrelationships between living things and their surroundings, and on taking action to protect the natural world.
Explanation:The main aspects cover a wide range of topics. These include population growth and its problems, land use and soil conservation, resource use and recycling, food production and nutrition, conservation of wildlife and non‑renewable resources, pollution of air, water, and soil, health and hygiene, and the relationship between humans and nature.
All these topics together serve two broad purposes: first, to educate about the environment (environmental education itself), and second, to promote the protection and wise use of resources (conservation). Therefore, the core aspects are environmental education and conservation.
Answer:Option A: Environmental education and Conservation